test-dyndbg: tune sub-module behavior

lib/test_dynamic_debug.c is used to build 2 modules:
test_dynamic_debug.ko and test_dynamic_debug_submod.ko

Define DEBUG only in the main module, not in the submod.  Its purpose
is to insure that prdbgs are enabled by default, so that a modprobe
without params actually logs something, showing that compile-time
enablement works.  This doesn't need to be repeated in the submodule.

Rather, the submodule's purpose is to prove that classmaps defined and
exported from a parent module are propagated to submodules, setting
their class'd debugs accordingly.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>

lib/test_dynamic_debug.c

@@ -6,13 +6,13 @@
  *      Jim Cromie	<jim.cromie@gmail.com>
  */
 
-#if defined(TEST_DYNAMIC_DEBUG_SUBMOD)
-  #define pr_fmt(fmt) "test_dd_submod: " fmt
-#else
+#if !defined(TEST_DYNAMIC_DEBUG_SUBMOD)
   #define pr_fmt(fmt) "test_dd: " fmt
+  #define DEBUG	/* enable all prdbgs (plain & class'd) at compiletime */
+#else
+  #define pr_fmt(fmt) "test_dd_submod: " fmt
 #endif
 
-#define DEBUG /* enable all prdbgs (plain & class'd) at compiletime */
 
 #include <linux/module.h>